The present invention provides an anchor to attach an artificial disc to vertebral bodies. The artificial disc comprises a superior endplate and an inferior endplate. A disc section extends between the endplates. The superior endplate comprises a first wall defining a first cavity, the first cavity to contain material to facilitate fusion of the superior endplate to a superior vertebral body. Similarly, the inferior endplate comprises a second wall defining a second cavity, the second cavity to contain material to facilitate fusion of the superior endplate to a superior vertebral body.